package cn.tedu.egweibo1.controller;

import cn.tedu.egweibo1.mapper.UserMapper;
import cn.tedu.egweibo1.pojo.dto.UserLoginDTO;
import cn.tedu.egweibo1.pojo.dto.UserRegDTO;
import cn.tedu.egweibo1.pojo.entity.User;
import cn.tedu.egweibo1.pojo.vo.UserVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpSession;
import java.util.Date;

@RestController
@RequestMapping("/v1/user/")
public class UserController {
    @Autowired
    private UserMapper userMapper;

    /**
     * 1.注册功能
     */
    @PostMapping("reg")
    public int userReg(@RequestBody UserRegDTO userRegDTO){
        System.out.println("userRegDTO = " + userRegDTO);
        /*
            1.接收参数[已完成];
            2.数据合法性校验[暂时不做,后续用验证框架做];
            3.校验用户名是否被占用[SELECT接口];
              3.1 被占用,return 2;
              3.2 未被占用,[INSERT接口],return 1;
         */
        UserVO userVO = userMapper.selectByUsername(userRegDTO.getUsername());
        if (userVO != null) {
            return 2;
        }
        User user = new User();
        BeanUtils.copyProperties(userRegDTO,user);
        user.setCreated(new Date());
        userMapper.insert(user);
        return 1;
    }
    /**
     * 2.登录功能
     */
    @PostMapping("login")
    public int userLogin(@RequestBody UserLoginDTO userLoginDTO, HttpSession session){
        System.out.println("userLoginDTO = " + userLoginDTO);
        /*
            1.根据用户名查询;
            2.未查到数据,用户名错误;
            3.查到了数据,比较密码是否正确;
         */
        UserVO userVO = userMapper.selectByUsername(userLoginDTO.getUsername());
        if (userVO == null) {
            return 3;
        }
        if (userVO.getPassword().equals(userLoginDTO.getPassword())) {
            session.setAttribute("user",userVO);
            return 1;
        }
        return 2;

    }
    /**
     * 3.获取当前用户状态
     */
    @GetMapping("currentUser")
    public UserVO currentUser(HttpSession session){
        UserVO userVO = (UserVO) session.getAttribute("user");
        return userVO;
    }
    /**
     * 4.退出登录
     */
    @GetMapping("logout")
    public void logout(HttpSession session){
        session.removeAttribute("user");
    }
}
